Nail polish bottle



FIG. 1 is a front elevation of a nail polish bottle showing my new design, the rear elevation being the same;

FIG. 2 is a side elevation thereof, the opposite side being the same;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a nail polish bottle, as shown and described. 